Healthier hair in a bottle, The Leave-In Hair Treatment replenishes, smooths, and softens strands, boosts shine and vibrancy, and strengthens your hair while helping to reduce breakage and support natural hair growth.

Formulated for all hair types, this game-changing serum is the ideal antidote for all your hair concerns. From dehydration, shedding, and frizz to breakage, split ends, and damage from over-styling or color-processing, this restorative, antioxidant-packed concentrate instantly improves your hair’s look and feel while promoting its long-term health. Experience haircare redefined. Backed by 30 years of cutting-edge science. Powered by TFC8®.

Housed in a 100% recyclable tube made from sustainable sugar cane and 100% recyclable cap. Carton and leaflet are FSC-certified and recyclable.

Replenishes and smooths strands, boosts shine, tames frizz, and strengthens hair without weighing it down.
Helps to support natural hair growth while preventing shedding and breakage.
Helps to reverse brittle or weakened hair - renewing strands, improving hair thickness, and noticeably reducing the appearance of split ends.
Ultra-nourishing and hydrating seals in nutrients and helps the hair retain moisture for silky locks with a healthy bounce.
Softens and detangles hair for easier combing and reduced breakage.
Combats damage caused by daily styling, color processing, chemical treatments, and environmental aggressors - for stronger, shinier, more resilient hair.
Ingredients that support improved scalp health with soothing, fortifying, and anti-inflammatory properties.

100% agree hair looks and feels healthier after use
90% agree The Leave-In Hair Treatment helps repair hair from heat
97% agree hair feels easier to manage/style after use
See clinical and user trials.

Ultra-nourishing, and fast-absorbing. Residue-free and does not weigh down hair.
Formulated without irritants, allergens, silicones, parabens, or sulfates. Fragrance-free.
Suitable for all hair types. Vegan.

Apply a small amount to clean, dry or towel-dried hair. Using fingertips or The Neem Comb, work from the scalp or midlength to the end of hair, focusing on areas of need. Allow hair to dry naturally, or blow dry for an enhanced finish.

Use 2 to 3 times per week as needed.
For best results, use in conjunction with the Augustinus Bader haircare system: The Shampoo, The Conditioner, The Scalp Treatment, and The Hair Oil.
Suitable for all hair types.

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By Category

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Augustinus Bader The Ultimate Soothing Cream

Face

Eyes

Lip

Other

Westman Atelier Effortlessly Flawless

Hair

Body

Bath & Shower

Other

VIRTUE Revolutionary Haircare

Wellness

Home

Shop Sexual Wellness

Pleasure is Power

Category

Shop Final Sale

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Hair Care - Styling - Heat Protection